Interactive: Proving Angles Congruent Answers

What is the missing reason for line 4 in this proof? Given: Prove: and are supplementary Statement Reason 1. 1. 2. 2. 3. and form a linear pair 3. 4. and are supplementary 4. 5. 5. 6. 6. 7. and are supplementary 7.

What is the missing reason for line 3 in this proof? Given: Prove: and are supplementary Statement Reason 1. 1. 2. 2. 3. and form a linear pair 3. 4. and are supplementary 4. 5. 5. 6. 6. 7. and are supplementary 7.

What is the missing reason for line 6 in this proof? Given: Prove: and are supplementary Statement Reason 1. 1. 2. 2. 3. and form a linear pair 3. 4. and are supplementary 4. 5. 5. 6. 6. 7. and are supplementary 7.

What is the missing reason for line 2 in this proof? Given: Prove: and are supplementary Statement Reason 1. 1. 2. 2. 3. and form a linear pair 3. 4. and are supplementary 4. 5. 5. 6. 6. 7. and are supplementary 7.